TDA5101 Infineon Technologies, TDA5101 Datasheet - Page 26

• Manufacturer Part Number: TDA5101
• Description: TRANSMITTER ASK/FSK P-TSSOP-16
• Manufacturer: Infineon Technologies

Specifications of TDA5101

• Frequency: 315MHz
• Applications: Alarm Systems, Communication Systems
• Modulation Or Protocol: ASK, FSK
• Data Rate - Maximum: 20 kbps
• Power - Output: 5dBm
• Current - Transmitting: 7mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.1 V ~ 4 V
• Operating Temperature: -25°C ~ 85°C
• Package / Case: 16-TSSOP
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Product Depth (mm): 4.4mm
• Operating Supply Voltage (min): 2.1V
• Operating Supply Voltage (typ): 2.5/3.3V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant
• Other names: TDA5101INTR

Wireless Components
Example for the FSK-Mode:
FSK modulation is achieved by switching the load capacitance of the crystal as
shown below.
The frequency deviation of the crystal oscillator is multiplied with the divider
factor N of the Phase Locked Loop to the output of the power amplifier. In case
of small frequency deviations (up to +/- 1000 ppm), the two desired load
capacitances can be calculated with the formula below.
Because of the inductive part of the TDA 5101, these values must be corrected
by formula 1). The value of Cv± can be calculated.
C
C
f:
ω:
N:
df:
L
0
:
:
crystal load capacitance for nominal frequency
shunt capacitance of the crystal
frequency
ω = 2
division ratio of the PLL
peak frequency deviation
CL
-R
±
π
=
f: angular frequency
4 - 6
FSKDTA
Csw
CL
L
IC
1
#
±
C
N
0
∆
*
N
f
FSKOUT
COSC
f
∆
*
1
f
1 (
f
1
+
1 (
f, CL Cv1
( 2
+
C
( 2
0
C
C
+
1
0
C
CL
+
1
Specification, October 2001
CL
)
)
)
)
Cv2
Applications
TDA 5101